From: gah AT jet DOT es (Grzegorz Adam Hankiewicz)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Area of square problem, different.
Date: Fri, 12 Jun 1998 12:49:24 GMT
Organization: Gogosoftware
Lines: 47
Message-ID: <35811fae.6174643@news.jet.es>
References: <35806450 DOT B3F694CD AT netrover DOT com>
NNTP-Posting-Host: infot162.jet.es
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

So you are here again ... :-)

On Thu, 11 Jun 1998 19:12:17 -0400, Nicolas Blais
<eletech AT netrover DOT com> wrote:
>The bit of code below seams to work partially or actually more than I
>expect, because when I click on the rectangle, it gives me millions
>(seriously) of the "Yep" string, but I only want one.

Ok. let's think for a moment what your program is trying to do. Now
you are checking quickly both the area and the mouse button. Think how
many times a second could be run this loop. I would say more than
hundreds of times a second... and that's the number of "Yeps" you get
on the screen.

After printing the text, you may want to "wait" for the user to
release the button :-) It could be done like this:

if (mouse_b == 1) {
	show_mouse(NULL);
	textout(blah... blah ...blah...);
	// Here comes the change...
	while( mouse_b == 1) ;
	show_mouse(screen);
}

Notice that you can place the "wait" after or before
show_mouse(screen). If you choose the later, you will be able to 'see'
the mouse pointer while the user is still pressing the mouse button.

>Also, sometimes,it just doesn't print the "Yep".  Can this be fixed?

The x and y parameters you pass to textout are random() % 800 and
random() % 600. Remember that these point the top left pixel of the
first character, which is "Y". Now imagine that random() % 800 returns
a value of 797. You would be able then to see only 3 pixels of the
"Y", while the rest of the string is clipped out.

The same goes to the height, if random() % 600 is bigger than 595 or
so, you probably won't notice the string that is being printed out.

In this case you simple need to reduce by some amount the values you
are getting. Say random() % 770 for the x value and random() % 590 for
the y value of textout. This is not a very elegant solution, but will
work :-)

- Grzegorz Adam Hankiewicz - gah AT jet DOT es - http://web.jet.es/gregorio/
- Gogosoftware - http://welcome.to/gogosoftware/